Lock-joint.



W. MILLER. LOCK JOINT. APPLIOATION FILED JUNE 25,1913.

Patented Dec. 1,1914.

UNITED STATES PATENT orrIoE.

. WILLIAM MILLER, or AMESIBURY, MASSACHUSETTS, ASSIGNOR To ROBERT H.HILLS AND WILLIAM E. IBIDDLE, BOTH F AMESBURY, -MASSACHUSETTS.

LOCK-JOINT.

Toallwhom it may concern Be it known that IQWILLIAM MILLER, a

citizen of' the United Statesfresiding at Amesbury, "in thew.county* ofEssex and State of Massachusetts, have invented an Improvement inLock-Joints, of which the following is a specification.

This invention relates particularly to lock 1 hinges, ;orhingedusupports for: automobile wind-shields, and has for its object toprovide a form of frictional lock-for a device 7 shield in which'vadevice embodying my in vention is employed. Figs. 2 and 3 are i so"views of opposite ends of the "device. Fig. 4 is a central cross-sectionon the line of Fig 3,. Fig. 5 is adetailgen'd view of the device. Fig. 6is a. detail view thereof, partly in plan and'partly in section, and,

Fig. 7 is a detail view showing the various parts of the devicedisassembled. j In the drawing a, a, indicate the ordinary standardswhich are mounted in the automobile-body and 'which support the.

wind-shield b at their upper ends, a jointed connection being providedbetween each standard and theshield which constitutes the subject of myinvention,and, as the con- W .nections are identical, except thattheyare made as rights and lefts, a description of one will suflice. j a j iThe jointedconnection, or support which constitutes the subject of'myinvention comprises a fixedmember c 'whichjis mounted onthe upper endofthe standarda, and a swinging member (1,; to which the windshieldisattachedaj Said vmember (Z is pro-.

vided with a cylindrically shapedtrunnion- (23, formed integrallytherewith and which projects laterallyfitherefrom and is journaled inabearing '0 in the member 0 which extends entirely through saidmember, acap 7 being secured by screws, or, other suitable means, to the end ofsaid trunnion (Z, to retain the trunnion in thebearing. Said memher 0 is-.p10 Vid6dfW ii3h an annularrecess-c Specification of l 'iettersPatent.

. Application filed June 25, 1913. Serial 110.775559.

gether.

Patented Dec. 1, 1914.

about the bearing 0 to receive a ring 6, i which is preferably ofcast-iron and is cut transversely, so that the opposite portions thereofare resilient and adapted to be sprung apart to cause the same to bindagainst the surface of the annular'recess c Said ring is also adapted tofit on the trunnion cl, to provide an additional support therefor, whenthe parts are in locked position, as hereinafter, described. ,The endfacese on the ring 6, formed by slotting .the same transversely,are'fo'rmed togextend convergently from one sideto the other, and akeygisarranged in a diametrically disposed slot d? in the trunnion d,and is mountedat one end to swing ona pivot it supported by saidtrunnion at one side of the axial line thereof. The opposite end of saidkey extends beyond the periphery of the trunnion into thetransverse slotof the ring e between the faces e,preventing relative rotation ofsaidring and trunnion, and the sides. of said key are tapered to correspondto the taper of said aces. v

A pin 2' is mounted in the plate f and has a spring 7' thereon, said pinextending into arecess g in the key 9, and the spring j bearingagainstsaid'key, so that it tends to swing the key out of engagementwith faces 6. A thumb-screw 7a is threaded into the swinging member (Zin an oblique direction, and is adapted to bear on a correspondinglyobliquely disposed face g 'on the end of the key 9 opposite the pivot e,in position to force the same toward the point .of intersection oftheplanes of the faces e.

The members having been placed in. po-

' sition, the mannerof locking the member (Z against the surface of theannular recess 0 so that the parts are all firmly locked to- If a isdesired to ainlock the parts a is merely necessary. to unscrew thethumbscrew 70 permitting the spring z' to force the key out ofengagementwith the ring a,

so that the latter is permitted tocontract and thus'become disengagedfrom the member 0, thereby permitting the member d to swing readily withrelation thereto.

While it would be within the range of mechanical equivalency to reversethe relation of the locking devices to the fixed and swinging members, Iwish it to be understood that my invention is not especially limited toeither arrangement, yet the par- I ticular arrangement shown ispreferable, as,

by it, I find it much more convenient to locate the thumb-screw in theswinging member and I avoid the objection of having it extend beyond theside of the shield support.

I claim:

1. A hinge support comprising a fixed member, a movable member having alongitudinally slotted trunnion extending into said fixed nen'iber, atransversely slotted .1 expansion ring 'surroimding said trunnion andjournaled in said fixed mei'nber, a key mounted in the slot of saidtrunnion and extending longitudinally into the slot of said ring toprevent relative rotation thereof,

the sides of said key being extended convergently and means to move saidkey transversely to wedge the ends of the ring apart, and expand thering into locking engagement with said fixed member.

2. A hinge support comprising a fixed member, a movable member having atrunnion extending into said ffixed member, a transversely slottedexpansion ring surrounding said trunnion and held in periph eralengagement with said fixed member. a

transversely tapering key mounted in said trunnion and extendinglongitudinally into the slot of said ring to prevent relative rotationthereof, the slot of said ring being arranged to form transverselyconverging and extending longitudinally, into the slot of said ring toprevent relative rotation thereof, and means'to move saidkey'transversely to force apart the end faces ofvsaid ring and expandthe same into locking engagement with said fixed member.

f. A hinged support comprising a fixed member, a movable member having atrun' nion extending into s'aid fixed member, said trunnion having aradially disposed slot said'ringi v v p g 8. A hlnge support comprisinga fixed therein, an expansion ringhaving a transverse slot forming endfaces, said ring encircling said-trunnionand arranged in peripheralengagement with said fixed mem her, a wedging key pivotally mounted inthe slot of said trunnion and extending into the slot of said ringand'means to swing said 7 key on its pivot, to wedge apart the end facesof said ring to expand the same into locking engagement with saidfixe'dmember. 5. A h nge support comprlslng afixed member, a movable member 1hav ng a trunnion extending into said fixedniember, said trunnion havinga radially disposed slot therein, an expansion ringhaving a transverseslot forming end faces, said ring'encircling saidtrunnion and arrangedin peripheral engagement with said fixed memher, a wedging key disposedin'the slot of said trunnion and extending longitudinally into the slotof :said'ring 'to prevent relative rotation thereof, and ascrejwthreaded in said movable member and arranged to engage one side of saidkey and move the same transversely to wedge 'apart said end faces andexpand sa1dr1ng1nto lockingengagement with said fixed member,

6. A hinge support comprisingga" fixed" member, a movablemember having atrunnion extending into said fixed member, said trunnion having aradially disposed slot therein, an expansion ringihaving a transverseslot forming end faces, said ringencircling said trunnion and arrangedin peripheral engagement with said fixed memher, a wedging key pivotally'mounted in the slot of said trunnion: and extending into the slot ofsaid ring, and a screw, threaded in said movable member, in position toengage said key adjacent its free end, and

swing the same on its pivot, to wedge said end faces apart.

7. A hinge support comprising a fixed member, a movable member having atrunnion extending into said fixed member, said trunnion having a"radially disposed slot therein, an expansion ring having, a transverseslot forming end faces, said ring encircling said trunnion-and arrangedin pe ripheral engagement with said fixed memher, a wedging keypivotally mounted in the slot of said trunnion and extending into theslot of said ring,an'd"a screw disposed in said movable member obliquelyto the axis of the trunnion in position to swing said key laterally towedge apart the end faces of member, a movable member having atrunnionextending into said fixed member, said trunnion having a radiallydisposed slot therein, an expansion ring having atransverse slotformingend faces, said ring encirclingsaid trunnion. and arranged in periphe'ral engagement with said fixed fmem- 1 member, a movable memberhaving a trunber, a wedging key disposed in the slot of said trunnionand extending into the slot of said ring to prevent relative rotationthereof, means to move the key laterally in one direction to wedge apartsaid faces and expand the ring and a, spring arranged to engage said keyto move 'it in the opposite direction to permit said ring to contract.

9. A' hingesupport comprising a fixed member, a wedging key mounted insaid;

trunnion and extending into the slot of said ring to prevent relativerotation of said ring and trunnion, means to move said key in b onedirection towedgei apart the ends of said ring and expand it, inlockingengage-i ment with said fixed member, and a spring to move saidkeyinthe opposite direction when released.

10, A hinge support comprising a fixed member having an apertureextending therethrough, said aperture being chambered at one end, toform an annular recess, a transversely slotted expansion ring arrangedin said recess and having its bore of substantially the diameter of theunchambered portion of saidaperture, a movable member having a radiallyslotted trunnion fitting said aperture and the bore of said ring, a

I wedging key arranged in the slot of said trunnion and extendingintothe slot of said ring, means to move said key to expand said ringinto locking engagement with said fixed member, and a cap on the end ofsaid trunnion arranged to engage the opposite side of said fixed memberfrom said movable member.

In testimony whereof, I have signed my name to this specification inthepresence of two subscribing witnesses.

WILLIAM MILLER.

\Vitnesses: 1

H. HARRIMAN,

A. W. PARKS.

Copies of this patent may be obtained for five"cents each, "byaddressing the Commissioner of Patents,

. i N Washington, D. O.

